I have been experimenting with getchar(), putchar() and have been trying to use EOF. Below is the snippet of code I have been experimenting with.
#include <stdio.h>
int main(void)
{
int c;
c = getchar();
while(c != EOF)
{
putchar(c);
printf("\n");
printf("%d\n", EOF);
c = getchar();
}
return 0;
}
Input: -
a
Expected output: -
a
//Due to putchar()-1
//Value of EOF
//Now the cursor should come in next line and wait for next character.Output getting in real time: -
a
-1
-1
//Cursor waiting for next character.
I am not able to comprehend the reason why the output is showing -1 two times.
Your code comment says
//Now the cursor should come in next line and wait for next character.
But the second loop doesn't wait. It reads the newline that was already entered, and this is shown by the extra blank line in the output.